Exporting ProRes/Gamma shift issues - Red channel leaning?

A

andrew00

Well-known member
What a weird subject title...

I'm exporting a video, shot on 5d, edited in PR422, from FCP and like most of us I'm experiencing the gamma shift issues with the QT exporting video. Specifically where my footage appears too bright, noisy and lacking contrast, due to the gamma boost.

I've been playing around in Compressor to try to use some of the filters there to get the footage accurate, about to do the same in MPEG Streamclip. I can apply a bit of black restore + brightness/contrast to get things looking the same, but I'm also seeing a shift to the colour Red, in essence where Browns become more Golden, which is throwing off my CC and skin tones.

I've not seen any writing before about this Red channel shift, only the gamma issues, so I was wondering if it's just my eyes and what I can do about it etc.
 
I know i've seen a gamma correction check box in compressor somewhere in the pro res settings. Forget where though.
 
I found that using compressor always introduced a shift. I use mpeg streamclip batch converting ... this seems to keep the prores files much closer to the gamma of the h264 files.
 
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